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    <meta charset="UTF-8" />
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    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>Document</title>
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    <script>
      // async 修饰的函数返回值 自动会变成promise对象
      async function fn() {
        // return 123;
      }

      function init() {
        const result = fn();
        console.log(result);
      }
      init();
    </script>
  </body>
</html>